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Location: kallithea/init.d/kallithea-daemon-redhat

Thomas De Schampheleire
ini file: clarify that beaker.session.key should be unique

When several instances of Kallithea are running on the same machine, the
same browser cannot be logged into both instances at the same time without
conflicts. The login session are saved into the same cookie; logging into
one instance closes the session on the second instance and vice-versa.

This is caused because the cookie name is simply 'kallithea', combined with
the fact that the cookie specification (RFC6265) states that there is no
isolation of cookies based on port. This means that the browser sends all
cookies from a given domain with all services (Kallithea instances) running
on that domain, irrespective of port.

The services thus need to handle any such issue themselves, for example by
using unique cookie names and only interacting with one's own cookie.

Making the key unique when creating the configuration file proved difficult:
- it does not seem possible to hook into 'paster make-config'
- since Beaker directly interprets the beaker.session.key, changing it on
the fly from SessionMiddleware will not work correctly.

There is a kallithea-config script that is an alternative to 'paster
make-config' which would be the ideal place to make such changes. However,
it seems this method is not advocated over 'paster make-config' (yet?).

Instead, simply add a comment in the config file and let the user take care
of it.
#!/bin/sh
########################################
#### THIS IS A REDHAT INIT.D SCRIPT ####
########################################

##################################################
#
# Kallithea server startup script
# Recommended default-startup: 2 3 4 5
# Recommended default-stop: 0 1 6
#
##################################################


APP_NAME="kallithea"
# the location of your app
# since this is a web app, it should go in /var/www
APP_PATH="/var/www/$APP_NAME"

CONF_NAME="production.ini"

# write to wherever the PID should be stored, just ensure
# that the user you run paster as has the appropriate permissions
# same goes for the log file
PID_PATH="/var/run/kallithea/pid"
LOG_PATH="/var/log/kallithea/kallithea.log"

# replace this with the path to the virtual environment you
# made for Kallithea
PYTHON_PATH="/opt/python_virtualenvironments/kallithea-venv"

RUN_AS="kallithea"

DAEMON="$PYTHON_PATH/bin/paster"

DAEMON_OPTS="serve --daemon \
    --user=$RUN_AS \
    --group=$RUN_AS \
    --pid-file=$PID_PATH \
    --log-file=$LOG_PATH $APP_PATH/$CONF_NAME"

DESC="kallithea-server"
LOCK_FILE="/var/lock/subsys/$APP_NAME"

# source CentOS init functions
. /etc/init.d/functions

RETVAL=0

remove_pid () {
  rm -f ${PID_PATH}
  rmdir `dirname ${PID_PATH}`
}

ensure_pid_dir () {
  PID_DIR=`dirname ${PID_PATH}`
  if [ ! -d ${PID_DIR} ] ; then
    mkdir -p ${PID_DIR}
    chown -R ${RUN_AS}:${RUN_AS} ${PID_DIR}
    chmod 755 ${PID_DIR}
  fi
}

start_kallithea () {
    ensure_pid_dir
    PYTHON_EGG_CACHE="/tmp" daemon --pidfile $PID_PATH \
        --user $RUN_AS "$DAEMON $DAEMON_OPTS"
    RETVAL=$?
    [ $RETVAL -eq 0 ] && touch $LOCK_FILE
    return $RETVAL
}

stop_kallithea () {
    if [ -e $LOCK_FILE ]; then
      killproc -p $PID_PATH
      RETVAL=$?
      rm -f $LOCK_FILE
      rm -f $PID_PATH
    else
      RETVAL=1
    fi
    return $RETVAL
}

status_kallithea() {
  if [ -e $LOCK_FILE ]; then
    # exit with non-zero to indicate failure
    RETVAL=1
  else
    RETVAL=0
  fi
  return $RETVAL
}

restart_kallithea () {
    stop_kallithea
    start_kallithea
    RETVAL=$?
}

case "$1" in
  start)
    echo -n $"Starting $DESC: "
    start_kallithea
    echo
    ;;
  stop)
    echo -n $"Stopping $DESC: "
    stop_kallithea
    echo
    ;;
  status)
    status_kallithea
    RETVAL=$?
    if [ ! $RETVAL -eq 0 ]; then
      echo "Kallithea server is running..."
    else
      echo "Kallithea server is stopped."
    fi
    ;;
  restart)
    echo -n $"Restarting $DESC: "
    restart_kallithea
    echo
    ;;
  *)
    echo $"Usage: $0 {start|stop|restart|status}"
    RETVAL=1
    ;;
esac

exit $RETVAL